--- a/sys/posix/posix_main.cpp
+++ b/sys/posix/posix_main.cpp
@@ -362,7 +362,7 @@
 static const int   crashSigs[]     = {  SIGILL,   SIGABRT,   SIGFPE,   SIGSEGV };
 static const char* crashSigNames[] = { "SIGILL", "SIGABRT", "SIGFPE", "SIGSEGV" };
 
-#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__)
+#if ( defined(__linux__) && defined(__GLIBC__) ) || defined(__FreeBSD__) || defined(__APPLE__)
   // TODO: https://github.com/ianlancetaylor/libbacktrace looks interesting and also supports windows apparently
   #define D3_HAVE_BACKTRACE
   #include <execinfo.h>
--- a/sys/posix/posix_net.cpp
+++ b/sys/posix/posix_net.cpp
@@ -644,7 +644,7 @@
 		return -1;
 	}
 
-#if defined(_GNU_SOURCE)
+#if defined(_GNU_SOURCE) && defined(TEMP_FAILURE_RETRY)
 	// handle EINTR interrupted system call with TEMP_FAILURE_RETRY -  this is probably GNU libc specific
 	if ( ( nbytes = TEMP_FAILURE_RETRY( read( fd, data, size ) ) ) == -1 ) {
 #else
@@ -701,7 +701,7 @@
 		return -1;
 	}
 
-#if defined(_GNU_SOURCE)
+#if defined(_GNU_SOURCE) && defined(TEMP_FAILURE_RETRY)
 	// handle EINTR interrupted system call with TEMP_FAILURE_RETRY -  this is probably GNU libc specific
 	if ( ( nbytes = TEMP_FAILURE_RETRY ( write( fd, data, size ) ) ) == -1 ) {
 #else